lei_mirror: show child error error code

Just passing the exit value of the child process isn't to
our parent process isn't very useful when multiple commands
are failing at once.

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/PublicInbox/LeiMirror.pm b/lib/PublicInbox/LeiMirror.pm
index 4464b6b1..8b276336 100644
--- a/lib/PublicInbox/LeiMirror.pm
+++ b/lib/PublicInbox/LeiMirror.pm
@@ -602,7 +602,7 @@ sub reap_cmd { # async, called via SIGCHLD
         $? = 0; # don't let it influence normal exit
         if ($cerr) {
                 kill('TERM', keys %$LIVE);
-                $self->{lei}->child_error($cerr, "@$cmd failed");
+                $self->{lei}->child_error($cerr, "@$cmd failed (\$?=$cerr)");
         }
 }